title: 5-Amino-1H-1,2,4-triazol-4-ium hydrogen oxalate.
abstract: In the title salt, C2H5N4 (+)·C2HO4 (-), the hydrogen oxalate anions form corrugated chains parallel to the c axis, linked by inter-molecular O-H⋯O hydrogen bonds. The 5-amino-1H-1,2,4-triazol-4-ium cations are connected into centrosymmetric clusters via weak C-H⋯N hydrogen bonds forming nine-membered rings with an R 3 (3)(9) motif. These clusters are inter-connected via anions through N-H⋯O hydrogen bonds, building a three-dimensional network.
authors.affiliation: Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, 7021 Zarzouna Bizerte, Tunisia.
authors.forename: Manel
authors.initials: M
authors.lastname: Essid
authors.forename: Houda
authors.initials: H
authors.lastname: Marouani
authors.forename: Salem S
authors.initials: SS
authors.lastname: Al-Deyab
authors.forename: Mohamed
authors.initials: M
authors.lastname: Rzaigui